<template>
  <div id="app">
    <div class="box">
      <div class="v-html" v-html="loading[index]" v-if="isHtml"></div>
      <div class="v-text" v-text="loading[index]" v-else></div>
      <div></div>
    </div>
    <div class="btn">
      <div class="change-btn" @click='changeShow'>{{isHtml ? "查看源码" : "查看示例"}}</div>
      <div class="loading-btn">
        <div class="loading-btn-item" @click="index=0">1</div>
        <div class="loading-btn-item" @click="index=1">2</div>
        <div class="loading-btn-item" @click="index=2">3</div>
      </div>
    </div>
  </div>
</template>
<script>
  import "../assets/css/loading.css"
  export default{
    data(){
      return{
       loading:[
        `<div class="sk-chase">
                    <div class="sk-chase-dot"></div>
                    <div class="sk-chase-dot"></div>
                    <div class="sk-chase-dot"></div>
                    <div class="sk-chase-dot"></div>
                    <div class="sk-chase-dot"></div>
                    <div class="sk-chase-dot"></div>
                  </div>`,
            `<div class="spinner">
                    <div class="rect1"></div>
                    <div class="rect2"></div>
                    <div class="rect3"></div>
                    <div class="rect4"></div>
                    <div class="rect5"></div>
                  </div>`,
            `<div class="sk-cube-grid">
                    <div class="sk-cube sk-cube1"></div>
                    <div class="sk-cube sk-cube2"></div>
                    <div class="sk-cube sk-cube3"></div>
                    <div class="sk-cube sk-cube4"></div>
                    <div class="sk-cube sk-cube5"></div>
                    <div class="sk-cube sk-cube6"></div>
                    <div class="sk-cube sk-cube7"></div>
                    <div class="sk-cube sk-cube8"></div>
                    <div class="sk-cube sk-cube9"></div>
                  </div>`
                  ],
                  isHtml:true,
                  index:0
                }

    },
    methods:{
      changeShow(){
        this.isHtml=!this.isHtml
      }
    }
  }
</script>
<style>
  body {
      margin: 0;
      padding: 0;
    }
    #app {
      width: 100%;
      height: 100vh;
      background: linear-gradient(to right, #7474bf, #348ac7);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      color: #FFF;
    }
    .box {
      width: 400px;
      height: 350px;
      display: flex;
      justify-content: center;
      align-items: center;
    }
    .box .v-text {
      width: 100%;
      height: 100%;
    }
    .btn {
      width: 200px;
      height: 150px;
      margin-top: 10px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .btn .loading-btn {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
    .btn .loading-btn .loading-btn-item {
      width: 35px;
      height: 35px;
      background: rgba(0, 0, 0, 0.2);
      border-radius: 50%;
      text-align: center;
      line-height: 35px;
      cursor: pointer;
    }
    .btn .change-btn {
      width: 100px;
      height: 30px;
      line-height: 30px;
      text-align: center;
      background-color: rgba(0, 0, 0, 0.2);
      cursor: pointer;
      border-radius: 20px;
      font-size: 13px;
      letter-spacing: 2px;
    }
</style>